@@ -30,10 +30,13 @@ data TextInputConfig t = TextInputConfig
3030 { _textInputConfig_initialValue :: TextZipper
3131 , _textInputConfig_modify :: Event t (TextZipper -> TextZipper)
3232 , _textInputConfig_tabWidth :: Int
33+ , _textInputConfig_display :: Dynamic t (Char -> Char)
34+ -- ^ Transform the characters in a text input before displaying them. This is useful, e.g., for
35+ -- masking characters when entering passwords.
3336 }
3437
3538instance Reflex t => Default (TextInputConfig t) where
36− def = TextInputConfig empty never 4
39+ def = TextInputConfig empty never 4 (pure id)
3740
3841-- | The output produced by text input widgets, including the text
3942-- value and the number of display lines (post-wrapping). Note that some
@@ -62,7 +65,10 @@ textInput cfg = do
6265 ]
6366 click <- mouseDown V.BLeft
6467 let cursorAttrs = ffor f $ \x -> if x then cursorAttributes else V.defAttr
65− let rows = (\w s c -> displayLines w V.defAttr c s) <$> dw <*> v <*> cursorAttrs
68+ let rows = (\w s c -> displayLines w V.defAttr c s)
69+ <$> dw
70+ <*> (mapZipper <$> _textInputConfig_display cfg <*> v)
71+ <*> cursorAttrs
6672 img = images . _displayLines_spans <$> rows
6773 y <- holdUniqDyn $ _displayLines_cursorY <$> rows
6874 let newScrollTop :: Int -> (Int, Int) -> Int